Fix faster_ingredients bypassing defensive copy of ItemValue

Kudos to @nutant233 for noticing this

Author: embeddedt

forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/faster_ingredients/IngredientMixin.java

@@ -142,9 +142,7 @@ public ItemStack[] getItems() {
     private ItemStack[] computeItemsArray() {
         // Fast path for case with one item
         if (this.values.length == 1) {
-            if (this.values[0] instanceof Ingredient.ItemValue itemValue) {
-                return new ItemStack[] { itemValue.item };
-            } else if (this.values[0] instanceof Ingredient.TagValue tagValue && mfix$areTagsAvailable()) {
+            if (this.values[0] instanceof Ingredient.TagValue tagValue && mfix$areTagsAvailable()) {
                 var tag = BuiltInRegistries.ITEM.getTag(tagValue.tag);
                 if (tag.isPresent() && tag.get().size() > 0) {
                     var holderSet = tag.get();